Home / 153,469,279.20-211,790,455.40-83,859,168.72

Finding the Fourth Proportional to 153,469,279.20, 211,790,455.40 and 83,859,168.72

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Solution

The fourth proportional to 153,469,279.20, 211,790,455.40 and 83,859,168.72 is: 115,727,210.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,469,279.20 : 211,790,455.40 = 83,859,168.72 : x
  2. Step 2: Convert to fraction form
    153,469,279.20/211,790,455.40 = 83,859,168.72/x
  3. Step 3: Cross multiply
    153,469,279.20x = 211,790,455.40 × 83,859,168.72
  4. Step 4: Simplify right side
    153,469,279.20x = 17,760,571,532,674,236
  5. Step 5: Solve for x
    x = 17,760,571,532,674,236/153,469,279.20
  6. Step 6: Final answer
    x = 115,727,210.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.